From my point of view, almost nothing you have said above is correct. Hive devs are not making a lot of money, relative to what they do. And every Hive holder definitely benefits from the work they are doing. Hive literally wouldn't exist without them.
Are you referring to profits by devs that also invest in Hive as a cryptocurrency (which not all them do, of course)? And if so, don't you understand they could make similar profits just by investing in another cryptocurrency and doing nothing at all?
If I were vying for a piece of the pie I'd do the same thing, speculate,exagerate and make assumptions in the positive. The fact is, there's more development here than most anywhere else and much of it unnecessary for success.
That being said, you are basically the one top account that can make or break most other projects, even your own. That model is exactly the same as the American Congress and is hardly decentralized.